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20-letter words containing t, o, a, d

  • five-a-side football — a version of soccer with five players in each team
  • fixed action pattern — a highly stereotyped pattern of behavior that is characteristic of a particular species.
  • fixed-price contract — a contract in which the price is preset and invariable, regardless of the actual costs of production.
  • flight data recorder — a recording device that records relevant data during an aircraft's flight
  • fold-and-thrust belt — a linear or arcuate region of the earth's surface that has been subjected to severe folding and thrust faulting
  • for sb's delectation — If you do something for someone's delectation, you do it to give them enjoyment or pleasure.
  • forbidden transition — an electronic transition in an atom, molecule, etc, that is not permitted by electric dipole selection rules
  • fore-and-aft topsail — gaff topsail (def 1).
  • fort george g. meade — a military reservation in central Maryland, SW of Baltimore.
  • fourteenth amendment — an amendment to the U.S. Constitution, ratified in 1868, defining national citizenship and forbidding the states to restrict the basic rights of citizens or other persons.
  • frequency modulation — FM.
  • fridtjof nansen land — Franz Josef Land.
  • friends of the earth — an organization of environmentalists and conservationists whose aim is to promote the sustainable use of the earth's resources
  • front-end volatility — Front-end volatility is the ability of the fractions with lower boiling points, such as butane, to evaporate at normal temperatures.
  • fulminating compound — a fulminate.
  • fundamental constant — a physical constant, such as the gravitational constant or speed of light, that plays a fundamental role in physics and chemistry and usually has an accurately known value
  • gastroduodenostomies — Plural form of gastroduodenostomy.
  • genetically modified — biologically altered
  • get ahold of oneself — If you get ahold of yourself, you force yourself to become calm and sensible after a shock or in a difficult situation.
  • give a wide berth to — to keep clear of; avoid
  • go from bad to worse — worsen
  • go to someone's head — to confuse, excite, or intoxicate someone
  • grade school teacher — a teacher in a grade school
  • grand unified theory — a possible future quantum field theory that would encompass both the electroweak theory and quantum chromodynamics. Abbreviation: GUT.
  • gravitational radius — Schwarzschild radius.
  • great northern diver — a large northern bird, Gavia immer, with a black-and-white chequered back and a black head and neck in summer: family Gaviidae (divers)
  • great-great-grandson — the grandson of a grandchild
  • greatest lower bound — a lower bound that is greater than or equal to all the lower bounds of a given set: 1 is the greatest lower bound of the set consisting of 1, 2, 3. Abbreviation: glb.
  • guided visualization — a relaxation technique in which words, sounds, etc., are used to evoke positive mental images, feelings, and thoughts.
  • happy hunting ground — the North American Indian heaven, conceived of as a paradise of hunting and feasting for warriors and hunters.
  • heat of condensation — the heat liberated by a unit mass of gas at its boiling point as it condenses to a liquid: equal to the heat of vaporization.
  • helmeted guinea fowl — the common guinea fowl in its wild state.
  • heston and isleworth — a former borough, now part of Hounslow, in SE England, near London.
  • heteropolysaccharide — (carbohydrate) any polysaccharide formed from two or more different kinds of monosaccharide.
  • hexadecimal notation — a number system having a base 16; the symbols for the numbers 0–9 are the same as those used in the decimal system, and the numbers 10–15 are usually represented by the letters A–F. The system is used as a convenient way of representing the internal binary code of a computer
  • horizontal microcode — (processor)   Microcode using horizontal encoding.
  • horizontally opposed — A horizontally opposed engine has the cylinders set horizontally at either side of the crankshaft.
  • hospitality industry — the hotel and accommodation industry
  • hot under the collar — the part of a shirt, coat, dress, blouse, etc., that encompasses the neckline of the garment and is sewn permanently to it, often so as to fold or roll over.
  • hudson's bay blanket — a woollen blanket with wide stripes
  • huntington's disease — a hereditary disease of the central nervous system characterized by brain deterioration and loss of control over voluntary movements, the symptoms usually appearing in the fourth decade of life.
  • hydrodesulfurization — desulfurization by catalytic agents of the sulfur-rich hydrocarbons obtained from petroleum or the like during cracking or hydrocracking.
  • hydrostatic pressure — Hydrostatic pressure is the pressure exerted by a liquid that depends on how deep it is.
  • hyperadrenocorticism — Cushing's syndrome.
  • imported currantworm — the larva of any of several insects, as a sawfly, Nematus ribesii (imported currantworm) which infests and feeds on the leaves and fruit of currants.
  • in flagrante delicto — Law. in the very act of committing the offense.
  • in the public domain — able to be discussed and examined freely by the general public
  • in-service education — training and education given to employed teachers throughout their career
  • incomplete dominance — the appearance in a heterozygote of a trait that is intermediate between either of the trait's homozygous phenotypes.
  • incorporated company — a legally constituted company
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